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Finding the Fourth Proportional to 386,943.56, 580,202.22 and 207,239.59

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Solution

The fourth proportional to 386,943.56, 580,202.22 and 207,239.59 is: 310,745.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,943.56 : 580,202.22 = 207,239.59 : x
  2. Step 2: Convert to fraction form
    386,943.56/580,202.22 = 207,239.59/x
  3. Step 3: Cross multiply
    386,943.56x = 580,202.22 × 207,239.59
  4. Step 4: Simplify right side
    386,943.56x = 120,240,870,189.89
  5. Step 5: Solve for x
    x = 120,240,870,189.89/386,943.56
  6. Step 6: Final answer
    x = 310,745.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.